CAS Number:  259793-96-9

Formula:   C₅H₄FN₃O₂

Molecular Weight:  157.104 g·mol−1

Method of analysis:In House

Pharmacology

Favipiravir functions as a prodrug and undergoes ribosylation and phosphorylation intracellularly to become the active favipiravir-RTP. Favipiravir-RTP binds to and inhibits RNA dependent RNA polymerase

 (RdRp), which ultimately prevents viral transcription and replication.after dosing.

Mechanism

he mechanism of action of favipiravir is novel compared to existing influenza antivirals that primarily prevent entry and exit of the virus from cells.The active favipiravir-RTP selectively inhibits RNA polymerase and prevents replication of the viral genome.18 There are several hypotheses as to how favipiravir-RTP interacts with RNA dependent RNA polymerase (RdRp). Some studies have shown that when favipiravir-RTP is incorporated into a nascent RNA strand, it prevents RNA strand elongation and viral proliferation. Studies have also found that the presence of purine analogs can reduce favipiravir’s antiviral activity, suggesting competition between favipiravir-RTP and purine nucleosides for RdRp binding.

Storage Condition:Store in tightly closed container, at controlled room temperature.

Packaging:Tablet